Which detail best supports the main idea?
Rain barrels are easy to install and use.
A. It’s great for watering vegetable plants and flowers around your house.
B. One of the benefits of a rain barrel is it holds that first bit of rain that’s coming off the roof or your driveway and prevents it from running into streams and causing erosion from high flows of water.
C. I made my own rain barrel but you can buy them pretty cheaply now.
D. A rain barrel collects and stores water from your roof.
